21330502364 has 6 divisors (see below), whose sum is σ = 37328379144. Its totient is φ = 10665251180.

The previous prime is 21330502357. The next prime is 21330502421. The reversal of 21330502364 is 46320503312.

It is a super-2 number, since 2×21330502364² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2666312792 + ... + 2666312799.

It is an arithmetic number, because the mean of its divisors is an integer number (6221396524).

Almost surely, 2^21330502364 is an apocalyptic number.

It is an amenable number.

21330502364 is a deficient number, since it is larger than the sum of its proper divisors (15997876780).

21330502364 is a wasteful number, since it uses less digits than its factorization.

21330502364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5332625595 (or 5332625593 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 29.

The spelling of 21330502364 in words is "twenty-one billion, three hundred thirty million, five hundred two thousand, three hundred sixty-four".